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Home Archives Officers Future meetings American Society of Thermal and Fluids Engineering

ISSN Online: 2379-1748

ISBN Print: 978-1-56700-431-1 (Flash Drive)

ISBN Online: 978-1-56700-430-4

First Thermal and Fluids Engineering Summer Conference
August, 9-12, 2015 , New York City, USA

BAYESIAN INFERENCE OF SOOT VOLUME FRACTION THROUGH AUTO-CORRELATED LASER-INDUCED INCANDESCENCE

Get access pages 29-42
DOI: 10.1615/TFESC1.cbf.013233

Abstract

Auto-correlated laser-induced incandescence (AC-LII) infers the soot volume fraction (SVF) by comparing the spectral incandescence from laser-energized soot particles to the pyrometrically-inferred peak soot temperature. This calculation requires detailed knowledge of the spectral absorption function of soot, which is subject to considerable uncertainty. This paper presents a Bayesian methodology that can be used to quantify the uncertainty associated with this measurement. While standard AC-LII analysis provide a point-estimates of the SVF, Bayesian inference estimates the posterior probability density, which will allow scientists and engineers to better assess the reliability of AC-LII inferred SVF in the context of environmental regulations and competing diagnostics.
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